Sell Silica fume for Concrete/Refractory

Silica fume
1.Micro silica 85-98
2.High electrical resistivity and low permeability
3.Superior resistance to chemical attack

Silica fume

1.Instruction

Silica fume is a byproduct of producing silicon metal or ferrosilicon alloys.It consists primarily of amorphous silicon dioxide (SiO2),its average granule diameter is 0.15~0.20 µm,specific surface area is 15000~20000 m²/kg.

 

2.Main Properties

1. Very low permeability to chloride and water intrusion.
2. Extremely high electrical resistivity.
3. Increased abrasion resistance on floors,highways,marin structures.
4. Superior resistance to chemical attack from chlorides,acids,sulfates.

 

3.Specification

Grey Densified and undensified Micro Silica fume

Analysis	Result
	SF85	SF88	SF90	SF92	SF94	SF96	SF97	SF98
SiO2(%)(min.)	85.05	88.05	99.05	92.05	94.05	96.05	97.5	98.5
Fe2O3 (%)	0.78	0.44	0.21	0.25	0.20	0.20	0.10	0.20
Al2O3 (%)	0.29	0.20	0.21	0.25	0.20	0.20	0.20	0.20
CaO (%)	0.39	0.30	0.36	0.30	0.30	0.30	0.30	0.30
K2O+ Na2O (%)	0.29	0.24	0.22	0.20	0.20	0.20	0.20	0.20
Moisture (%)	3.05	2.55	2.05	2.05	1.85	1.25	1.00	1.00
Loss on Ignition (L.O.I) @975OC (%)	4.38	3.38	2.38	2.38	2.28	1.88	1.55	1

 

 

4.Packing

In jumbo bags of 900kg/bag or 20KG/BAG,300KG/BAG.

 

5.Delivery Time

Within 10 days after confirming the order.